Comment 42 for bug 574910

I've spoken with John on IRC and the team are perfectly aware there is a problem. This is not in dispute.

It takes time to track down these problems, and the time of a kernel developer is in high demand. I seriously doubt this is the only 'serious' bug affecting a decent number of users which is being tracked for resolution as soon as possible.

What doesn't help matters is white noise from users who superficially read 2% of the posts, scream "Oh my god that must be me" and then chime in with no helpful detail other than, "My system is slow, ya'll suck, I am off back to a better distro". Doubtless there are folks with a business depending on Ubuntu but unless you add to the equation, you're not helping either. Should you have a support contract with Canonical feel free to complain via that route, perhaps it will help.

Some helpful diagnosis has already contributed to tracking this down:

    * Downgrading portions of a Lucid Lynx system so it runs a Karmic Koala kernel seems to fix it
    * Upgrading a Karmic Koala box to a Lucid Lynx kernel, retaining the older userland, causes problems.

That fairly squarely points the finger at some kind of kernel regression. If anyone has the skills to assist pulling apart the kernel and diagnosing the issue then I'm sure that'd be appreciated; once we have some patches then anyone with the skills to trial a potentially fixed new kernel will be extremely useful.